<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/event1" method="post">
    <select name="command">
        <option value="1">simple</option>
        <option value="2">work</option>
        <option value="3">fanOut</option>
        <option value="4">direct</option>
        <option value="5">topic</option>
    </select>
    <input type="submit"/>
</form>
</body>
</html>